Would installing this game to an SSD improve load times for landscape textures?

Probably. I put an SSD (solid state drive) in my laptop and my start up time (power on to Windows login screen) went from 30 sec to 15 sec.

A SSD is going to improve anything that requires hard drive access. In Universe Sandbox 2 (almost) all the textures are loaded at the start of the program, so start up of Universe Sandbox would get faster, but would have little effect after the first 10 seconds or so.

Would installing this game to an SSD improve load times for landscape textures?

Probably. I put an SSD (solid state drive) in my laptop and my start up time (power on to Windows login screen) went from 30 sec to 15 sec.

A SSD is going to improve anything that requires hard drive access. In Universe Sandbox 2 (almost) all the textures are loaded at the start of the program, so start up of Universe Sandbox would get faster, but would have little effect after the first 10 seconds or so.

Space Engine loads planet textures everytime you go to a planet, so it would probably be faster. Though I suppose it could all have to do with the GPU.